ppbus_poll_bus
error = ppbus_poll_bus(dev, PPBUS_FOREVER, nBUSY, nBUSY,
return (ppbus_poll_bus(bus->sc_dev, 4, mask, status,
if (ppbus_poll_bus(bus, 40, nACK | SELECT | nFAULT,
return (ppbus_poll_bus(bus->sc_dev, 100, mask, status,
int ppbus_poll_bus(device_t, int, char, char, int);